It is true, mainly the current private server is quite good and even the failure of Twin Saga vgn may be due to the fact that the same ones who handle AK (the private server) took a private TS a long time ago. A VGN AK is probably not a good idea in the short or long term.
I don't know if you need suggestions for a new vgn game but i think that "Aura Kingdom VGN" will be interesting. This staff is so cool and AK is a game with a lot of content. PD: Keep in mind that there is currently a private server for this game